US634502A - Drill. - Google Patents

Description

' no. 634,502. V Patented Oct. 1,1899.

- m; u. manna.

DRILL.

v fiApplicl-tion. filed Dec. 22, 1898.)

(In Model.) 3 Shuts-Sheet l,

AOW'ZE D A HiNGTON D OW. ho a 5 77146222 4 no. 634,502. Patented Oct. :0, I899.

M. M. MOORE.

DRILL.

(Application filed Dec. 22, 1898.) (No Iodei.) 3 Sheets-Sheet 2.

a if

HE mmms warns 00.. m

No. 634,502. Patented l]1:t. l0,l899.

' n. u. moons.

DRILL. (Appliution mu: Due. as, 1895,

3 Shots-Shut 3 l (Nu Nodal-J UNITED STA'rEs PATENT OFFICE.

oses i1. MOORE, or orIIoAeo HEIGHTS, ILLINOIS, ASSIGNOR TO THE o a 0 COMPANY, or CHICAGO, ILLINOIS.

DRlLL.

SPECIFICATION forming part of Letters Patent No. 634,502, dated October 10, 1899.

ApplicationfiletlDecemberZZ,1898. Serial No. 700,002. (No model.)

To all whont it ntay concern:

Be it known that I, MOSES M. MOORE, a citi zen of the United States, residing at Chicago Heights, in the county of Cook and State of show the connection between the feed-screw and drill-spindle, the mitergear and the cam and lever which actuate the nut of the feed-screw being indicatedin dotted lines,

In this figure the" drill is shown in its advanced position, having passed through the web of a rail, andthe devices for automatically withdrawing the drill are shown as in engagement with the's'pur-gears of the spindle miter-gear and the fe e'd 'nut. Fig. 3 is an ens larged detached longitudinal section of the drill-spindle and its miter-gear and spur-gear, the feed-screw, its feed-nut and spur-gear, and'the shifting rod or shaft and pinions, whereby the miter-gear of the spindle and the feed-nut are coupled or connected for automatically and rapidly advancing or with{ drawing the drill; and Fig. 4 is a transverse section of the devices, taken on the line 4 l,

I for the support of the operative mechanism,

Fig. 2.

Like symbols refer to like parts wherever they occur. r I

My invention relates generally to portable drilling apparatus,and has been especially devised for use as a rail-drill for drilling the webs of rails when in position in the track, but is not to be taken as limited thereto, as certain features of construction will be found of generalutility in this class of apparatus.

The main objects in view are,'first, the provision of meansfor rapidly and automatically withdrawing'or advancing the drill when it becomes necessary to advance it to or with..

draw it from the rail-web or other article operated upon, and, second, the provision of a simple and efficient coupling between the rotatable d rill-spindle and n on-rotatable feedscrew which will insure the control of the longitudinal or ehdwise movement of the spindle by the feed-screw without interference with the rotation of the spindle.

In order to secure the first of the abovenoted objects,'I combine with the gearing which actuates the drill-spindle and the feedscrew thereof an endwise-movable shaft having an attached pinion and a pinion through which the shaft moves, the latter pinion being in constant gear with the feed-nut, whereby the feed-screw may be actuated from and simultaneously with the drill-spindle, and

such a combination or its equivalent embodies one feature of myinvention.

In order to secure the second object above noted, I combine the drill-spindle and feedscre'w by means of a shell or box, a detachable collar or plug, and an interposed ballrace and balls, whereby an antifriction end bearing between the parts is provided and a close connection of the spindle and feedscrew for purposes of longitudinal movement is obtained, and such a combination or its equivalent embodies another feature of my invention. 7

There are other minor features of invention, all as will hereinafter more fully appear.

I will now proceed to describe my invention more fully, so that others skilled in the art to which it appertains may apply the same. r I I In the drawings,A indicates the main frame said frame having at its front end lateral guide-lugs Ct a, through which pass links 13 B, that carry the pivoted clamp-hooks b b, and having journaled at its rear a shaft 0, provided at its ends with crank-pins c c, with feed-screw G, said feed-nut F also providedwith a spur-gear f, the counterpart of that upon the miter-gear of the drill-spindle.

E indicates the drill-spindle, provided with a keyway 6 (see Fig. 3) for the reception of a key (1 or splinein the hub of the miter-gear D, whereby the drill-spindle is caused to rotate with the miter-gear D, though capable of endwise movement independently of the miter-gear.

G indicates the feedscrew for the drillspindle E, to which the feed-nut F imparts an endwise motion, the feed-screw being secured against rotation, will hereinafter appear.

Secured to the end of feed-screw G by a pin g or in other suitable manner is a shell or box H, threaded, as at 72, for the reception of a-threaded annular plug or collar I, which loosely surrounds the adjacent end of drillspindle E, and fitted closely within the box H and bearing on the end of feed-screw G is a hardened disk g, grooved to form a raceway for antifriction-balls 9 while the adjacent end of drill-spindle E is capped by a hardened disk e, secured thereto by a screw 0 or in other suitable manner and project-' ing beyond the drill-spindle, so that the spindle shall be confined to the box II by means of the annular plug I, though capable of rotation within said plug. In fitting up the parts the loose annular screw-plug I will be passed over the drill-spindle shaft before the hardened disk 6 is secured to said spindle.

K indicates a cross-bar or saddle arranged to slide longitudinally within the frame A upon ways or guides 7a, and to said saddle or cross-bar the box or shell H is secured by screws 01 in other suitable manner, so that the box 70 and feed-screw H are prevented from rotating, while the free endwise movement of the feed-screw F is not interfered with.

Lindicates a removable cap-plate or'bridge (see Fig. 1) which spans the frame A, is supported thereon and secured thereto, and which cap-plate or bridge carries a vertical tube Z, in which is journaled the shaft M for applying the power to rotate the drill-spindle. Shaft M is provided above (see Fig. 1) with a miter-gear M, with which engages a mitergear N on the shaft N and below with a miter-gear h which meshes with the mitergear D of the drill-spindle and in addition thereto is provided with a cam (see dotted lines, Fig. 2) which through the medium of a lever O, pivoted on the frame A, and a spring pawl or dog 0 actuates the feed-nut F of the feed-screw G. The shaft N, which carries the miter-gear N, is journaled in a yoke or bracket 71, supported on the upperend of tube Z, and said shaft may be provided with the usual crank-handle commonly used for rotating such a shaft.

Journaled on the frame A, at one side thereof, (see Figs. 2 and 3,) is a shaft P, provided at one end with a knob P and capable of endwise movement in its bearings. This shaft P is provided at one end with a pinion 19, secured thereto by a pin 19 or in other suitable manner which will insure the movement of said pinion endwise with the shaft, and at its opposite end with pinion 19 provided with a key or spline 29 which travels in a keyway p of the shaft P, so that said second pinion will rotate with the shaft P, but will permit the shaft to move endwise through said pinion. The first-noted pinion p is adapted to mesh with spur-gear d of miter-gear D when the shaft P is pushed forward and to be disengaged therefrom when the rod or shaft P is pulled back, while the second pinion 19 remains in permanent mesh with the spur-gear f of feed-screw F, beinglocated between two bearings or other suitable provision to accomplish-the same being made.

The construction of the devices being substantially of the character hereinbefore pointed out, their operation will be as follows: Assuming the drill-to be withdrawn and the parts in the position shown with relation to a track-rail-that is to say, the clamp-hooks b I) passed over the rail and bearing upon the web thereof, which has been accomplished by throwing the lever 0 forward into the position shown in Fig. 1, so as to rotate the crank-shaft O c c and retract the links B B, which carry the pivoted clamp-hooks b 11- the shaft N is rotated by means of a suitable crank-handle and through miter-gears N M, shaft M, miter-gears h 2 and D rotates the drill-spindle E. At the same time the cam (see dotted line, Fig. 2) actuates lever O, which through the medium of dog or pawl 0 rotates the feed-nut F and (as the feed-screw is fixed against rotation) causes the endwise movement of the feed-screw G and the advance of the drill-spindle E and its drill. During the foregoing or drilling operation of the appliances the rod or shaft P has been drawn back, (see Fig. 3,) so that pinion 13 is out of mesh with the spur-gear cl on mitergear D; but as soon as the drilling operation is finished the operator first lifts the dog 0 of lever 0 out of engagement with feed-nut F and then pushes the shaft or rod P forward (see Fig. 2) until the pinion p meshes with spur-gear cl, whereupon a rapid reverse rotary motion is imparted from miter-gear D, through its spur-gear d, pinion p, shaft P, and pinion 19 to spur-gear f on feed-nut F, and feed-screw G is rapidly withdrawn,carrying with it the drill-spindle, which, as before noted, has an endwise movement through its miter-gear D. It is desirable to completely free the drill from its work (the track-rail) before the withdrawal movement is arrested, after which the drill canbe rapidly advanced to its work by the reverse motion of the shaft- N as preliminary to the next drilling opera tion, after which the dog 0 of lever Ois replaced in engagement with feed-nut F, and the drilling operation and slow feed of the drill-spindle will proceed as before.

Having thus described my invention, what and a saddle or slide movable on the main frame and which carries the feed-screw, substantially as and for the purposes specified.

2. In a drill, the combination with a main frame, a driving-gear journaled thereon, a drill-spindle movable with and through the driving-gear, a feed-nut, a feed-screw, a saddle or slide movable on the main frame and with which the fe ed-screw is connected, and an antifriction ball-bearing interposed between the drill-spindle and feed-screw, substantially as and for the purposes specified.

3. In a drill, the combination of a main frame, a driving-gear and a pinion jou'rnaled thereon, a drill-spindle movable with and through said driving-gear and pinion, a feednut and pinion, a feed-screw, a saddle or slide movable on the main frame and with which the feed-screw is connected, a sliding shaft having an attached pinion and a loose pinion, the latter being in constant gear with the pinion of the feed-nut and the former adapted to engage the pinion of the driving-gear, substantially as and for the purposes specified.

l. In a drill, the combination with a drillspindle and its feed-screw of interposed hardened disks one of said disks attached to the drill-spindle, and a coupling-box and annular plug for connecting the drill-spindle with the feed-screw, substantiallyas and for the purposes specified. 1

In testimony whereof I affix my signature, in presence of two witnesses, this 16th day of December, 1898.

MOSES M. MOORE.

Witnesses:

W. W. HOLMES, CHAS. H. JoHNsoN.

Images